What is the RTP of Eternal Duel?

Eternal Duel is published with an RTP of 96.42%. We hold the studio page stating it, and it is linked from this page.

Does Eternal Duel have a bonus buy?

Yes. Eternal Duel lets you buy the feature directly.

Can I play Eternal Duel for free?

Yes. The free demo of Eternal Duel opens on the studio's own page, without an account and without a deposit.

Where can I play Eternal Duel?

15 of our partner casinos carry this studio's games; they are listed above on this page. A brand-new release may stay exclusive to one operator for a few weeks.

Where to play Eternal Duel — 96.42% RTP, free demo and specs

Inside the game

Captured in the studio's own free demo on 11 September 2026. Nothing below is taken from a press release or another site — it is what the game shows when you open it.

The base game — Eternal Duel — The base gameThe base game: five reels across five rows, framed by the two brothers — Hades on the left, Zeus with his bolt on the right. The lightning-cut letters and numbers act as low symbols, the three-headed hound, the red helmet and Zeus's face as high ones. Below sit the BUY BONUS button, a demo bet of €2.00 and a play-money balance of €5,000.00.

Game rules, page 1 — Eternal Duel — Game rules, page 1ABOUT THE GAME sets out the tale of the two brothers, kings of sky and death, and confirms the five reels, five rows and payline wins. FEATURES moves on to the DuelReels™: a VS symbol expands into a whole reel, which counts as a Wild reel and opens a duel between two duellists, each carrying a multiplier.

Game rules, page 2 — Eternal Duel — Game rules, page 2The multiplier rule: the winning duellist's applies across the whole reel and is added to the wins running through it, several DuelReels in the same combination adding theirs together. Only one VS symbol can land per reel. The possible additive values are 2x, 3x, 4x, 5x, 10x, 15x, 20x, 25x, 50x, 75x and 100x; the illustration shows a duel won at 5x.

Game rules, page 3 — Eternal Duel — Game rules, page 3The FS DuelReels™: as soon as three or more FS symbols land together, each expands into a reel carrying two free spin values that duel each other — 2, 3, 4, 5 or 10. The winning values of every FS DuelReel are added together to give the bonus total. Some also display an Upgrade, which moves you up to the next bonus.

Game rules, page 4 — Eternal Duel — Game rules, page 4The upgrade table: three FS DuelReels™ with one Upgrade lead to the Zeus Fury bonus, with two Upgrades to Eternal Destruction, and four FS DuelReels™ with one Upgrade lead there too. The page then opens the first bonus, Hades Havoc, reached with three simultaneous FS DuelReels™.

Game rules, page 5 — Eternal Duel — Game rules, page 5The heart of Hades Havoc: one Reel Multiplier at the top and one at the bottom of every reel, each starting on a value drawn at random between Wild and 50x. Relic and Cyclops symbols push them up — the top two rows affect the top one, the bottom two the bottom one, the middle row both — and the panel caps those multipliers at 999x.

Game rules, page 6 — Eternal Duel — Game rules, page 6The symbols that feed those multipliers: the Relic, which adds its value, then the Cyclops, which multiplies the top, bottom or both Reel Multipliers. The panel gives the Epic Cyclops's possible multiplicative values: x2, x3, x4, x5 and x10.

Game rules, page 7 — Eternal Duel — Game rules, page 7The extra spins — each FS DuelReel landed during the bonus awards at least 2 and at most 10 — then Zeus Fury, opened by four simultaneous FS DuelReels™ for at least 8 free spins. A Wild there takes on the multiplier of the reel it lands on: the top one in the two upper rows, the bottom one in the two lower rows, both combined on the middle row.

Game rules, page 8 — Eternal Duel — Game rules, page 8Eternal Destruction, the hidden bonus: five simultaneous FS DuelReels™, at least 10 free spins, and a guarantee of at least one Wild, Relic or Cyclops together with one DuelReel on every spin — no FS symbol lands there. Below it the paytable begins, where the letters and numbers pay 2.00 for five.

Game rules, page 9 — Eternal Duel — Game rules, page 9The top of the paytable: the winged helmet, the skull and the three-headed hound pay 15.00 for five, Hades and Zeus 30.00, and the Wild 40.00. Under the table the game gives an RTP of 96.42%, calculated over ten billion simulated rounds and matching the fact sheet, ahead of the special symbols section.

Try it for free

The studio's own free demo, played here — no account, no money, the same maths as the real game.

Open the demo on Hacksaw Gaming’s site

Where to play Eternal Duel

15 of our partners carry Hacksaw Gaming games. A brand-new release may still be exclusive to one operator for a few weeks.

Advertising disclosure — we earn a commission when you sign up through these links. It never changes which games we list or the figures we publish.

Everything we know about this game

The RTP of Eternal Duel

Eternal Duel is published with an RTP of 96.42%.

The figure comes from hacksawgaming.com, and the page is linked above so you can check it yourself.

Volatility

Hacksaw Gaming states a high volatility for Eternal Duel. Studios measure volatility on their own scales, so we report what the studio says rather than converting it to a scale of our own.

Maximum win

The ceiling announced for Eternal Duel is 15,000x the total stake. A maximum win is a cap, not an expectation: it is the largest payout the game can produce, reached by a combination that the mathematics make rare.

How Eternal Duel is built

The game runs on a 5x5 grid, 19 paylines. Its mechanics are: Format 5x5 / 19 paylines, DuelReels (multipliers x2-x100, additifs), Hades Havoc reel multipliers x999, Relics + Cyclops symbols, Hit frequency 30.6%. A bonus buy is available.

What we checked

The 10 screenshots on this page were taken in the studio's own demo on 11 September 2026, not copied from another site. The figures above are read from those screens.

15 of our partner casinos carry this studio's games. We list where Eternal Duel can be played; we do not rank the operators by what they pay us.

Frequently asked questions

What is the RTP of Eternal Duel?: Eternal Duel is published with an RTP of 96.42%. We hold the studio page stating it, and it is linked from this page.
What is the maximum win on Eternal Duel?: The ceiling announced for Eternal Duel is 15,000x the total stake.
Does Eternal Duel have a bonus buy?: Yes. Eternal Duel lets you buy the feature directly.
How volatile is Eternal Duel?: Hacksaw Gaming states a high volatility for Eternal Duel.
Can I play Eternal Duel for free?: Yes. The free demo of Eternal Duel opens on the studio's own page, without an account and without a deposit.
Where can I play Eternal Duel?: 15 of our partner casinos carry this studio's games; they are listed above on this page. A brand-new release may stay exclusive to one operator for a few weeks.